Annealing-pot



(No Model.)

M. J. OMEARA. ANNEALING POT.

No. 595,494. Patented Dec. 14,1897.

UNITED STATES PATENT OFF CE.

MICHAEL J. OMEARA, OF ANDERSON, INDIANA.

ANNEALlNG-POT.

SPECIFICATION forming part of Letters Patent No. 595,494, dated December14, 1897.

Application filed March 2 5, 1 8 9 7.

To all whom it may concern;

Be it known that I, MICHAEL J. OMEARA, a citizen of the United States,and a resident of Anderson, in the county of Madison and State ofIndiana, have invented certain new and useful Improvements inAnnealing-Pots; and I do hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying-drawings, which form a part ofthis specification.

My invention relates to an annealing-pot for annealing metal, especiallytin-plate; and its object is to provide an improved construction of thesame which shall possess superior advantages with respect to efficiencyin use.

The invention consists, essentially, of an annealing-pot composed of ametal plate bent upwardly at each end at approximately right angles,forming the bottom and two sides and two end rectangular plates, theside and bottom edges of which are formed with tongues and grooves whichengage with corresponding tongues and grooves of the end plates and saidtongues clenched down upon the outsides of said plates and weldedthereto, as hereinafter fully described and claimed.

In the accompanying drawings, Figure l is a perspective View of anannealing-pot complete, showing the same inverted. Fig. 2 is a detailperspective view showing the tongues before being clenched and welded.Fig. 3 is a similar View showing a portion of the center plate and oneof the end plates disconnected from each other.

7 In the said drawings the reference-nu meral l designates the centerplate, having the ends bent at approximately right angles, forming thebottom 2 and sides 3 of the pot. The vertical edges of said sides andthe edges of said bottom are formed with a number of alternatingrectangular slots or mortises and corresponding tongues 5.

The numeral 6 designates the end plates of the pot, which arerectangular in form and the side and bottom edges formed with slots ormortises 8 and tongues 7, corresponding Serial No. 629,191. (No model.)

with the mortises and tongues of said plate 1. The said tongues are ofsuch a length with respect to the mortises that when engaged therewiththey will project beyond the plates, as seen in Fig. 2.

In assembling the parts the tongues and mortises of the end plates areengaged with those of the center plate and the tongues then clencheddown and welded, causing the metal of the same to overlap the edges ofthe mortises and thus making the end plates practically integral withthe center plates.

An annealing-pot constructed as described is practically indestructible,as the joints Will not become loose by any temperature to which they maybe exposed or by any rough usage to which such articles are usuallysubjected.

I am aware that it is not new to make a joint by forming two metalplates with alternating tongues and mortises, which tongues projectthrough the mortises beyond the plates and have their ends bent down atright angles thereto. In my invention the tongues after being passedthrough the mortises have their sides hammered down and Welded to theplates, so as to overlap the edges of the mortises.

Having thus fully described my invention, what I claim is As an improvedarticle, an annealing-pot, consisting of the central plate having itsends bent upward at approximately right angles, and the side and bottomedges formed with alternating tongues and mortises, and the rectangularend plates having coinciding tongues and mortises engaging therewith andthe tongues projecting through the mortises beyond the plates and havingthe corners swaged down overlapping the sides of the mortises and weldedto the plates, substantially as described.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

MICHAEL J. OMEARA.

Witnesses:

B. H. CAMPBELL, PETER LA BELLE.

